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Finding the Fourth Proportional to 639,127.13, 958,689.48 and 372,700.82

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Solution

The fourth proportional to 639,127.13, 958,689.48 and 372,700.82 is: 559,050.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,127.13 : 958,689.48 = 372,700.82 : x
  2. Step 2: Convert to fraction form
    639,127.13/958,689.48 = 372,700.82/x
  3. Step 3: Cross multiply
    639,127.13x = 958,689.48 × 372,700.82
  4. Step 4: Simplify right side
    639,127.13x = 357,304,357,718.10
  5. Step 5: Solve for x
    x = 357,304,357,718.10/639,127.13
  6. Step 6: Final answer
    x = 559,050.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.